@book{xie2020r,
  title={R markdown cookbook},
  author={Xie, Yihui and Dervieux, Christophe and Riederer, Emily},
  year={2020},
  publisher={Chapman and Hall/CRC}
}
@book{xie2018r,
  title={R markdown: The definitive guide},
  author={Xie, Yihui and Allaire, Joseph J and Grolemund, Garrett},
  year={2018},
  publisher={Chapman and Hall/CRC}
}
@book{wickham2016,
  title={R for Data Science},
  author={Wickham, H. and Grolemund, G.},
  isbn={9781491910399},
  url={https://r4ds.had.co.nz/},
  year={2017},
  publisher={O'Reilly Media}
}
